<!doctype html>
<html lang="zh-CN">
<head>

    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    
    <meta name="referrer" content="no-referrer-when-downgrade">
    

    <title>Flutter与原生通讯 | 早起的年轻人</title>
    <meta property="og:title" content="Flutter与原生通讯 - 早起的年轻人">
    <meta property="og:type" content="article">
        
    <meta property="article:published_time" content='2021-08-14T16:39:47&#43;08:00'>
        
        
    <meta property="article:modified_time" content='2021-08-14T16:39:47&#43;08:00'>
        
    <meta name="Keywords" content="Flutter，golang,go语言,go语言笔记,飞雪无情,java,android,博客,项目管理,python,软件架构,公众号,小程序">
    <meta name="description" content="Flutter与原生通讯">
        
    <meta name="author" content="luckly">
    <meta property="og:url" content="https://luckly.work/post/Flutter/flutter%E4%B8%8E%E5%8E%9F%E7%94%9F%E9%80%9A%E8%AE%AF/">
    <link rel="shortcut icon" href='/favicon.ico'  type="image/x-icon">

    <link rel="stylesheet" href='/css/normalize.css'>
    <link rel="stylesheet" href='/css/style.css'>
    <script type="text/javascript" src="//cdn.bootcdn.net/ajax/libs/jquery/3.4.1/jquery.min.js"></script>

    
    
    
        <link href="https://cdn.bootcdn.net/ajax/libs/fancybox/3.5.7/jquery.fancybox.min.css" rel="stylesheet">
    
    
    
    
        <link rel="stylesheet" href='/css/douban.css'>
    
        <link rel="stylesheet" href='/css/other.css'>
    
</head>

<link rel="stylesheet"
      href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/11.2.0/styles/default.min.css">
<script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/11.2.0/highlight.min.js"></script>
<body>
    <header id="header" class="clearfix">
    <div class="container">
        <div class="col-group">
            <div class="site-name ">
                
                    <a id="logo" href="https://luckly.work/">
                        早起的年轻人
                    </a>
                
                <p class="description">专注于Flutter、Android、Java、Go语言(golang)、移动互联网、项目管理、软件架构</p>
            </div>
            <div>
                <nav id="nav-menu" class="clearfix">
                    <a class="current" href="https://luckly.work/">首页</a>
                    
                    <a  href="https://luckly.work/categories/" title="分类">分类</a>
                    
                    <a  href="https://luckly.work/tags/" title="标签">标签</a>
                    
                    <a  href="https://luckly.work/archives/" title="归档">归档</a>
                    
                    <a  href="https://luckly.work/about/" title="关于我">关于我</a>
                    
                    <a  href="https://github.com/ITmxs/" title="github">github</a>
                    
                </nav>
            </div>
        </div>
    </div>
</header>

    <div id="body">
        <div class="container">
            <div class="col-group">

                <div class="col-8" id="main">
                    
<div class="res-cons">
    <style type="text/css">
    .post-toc {
        position: fixed;
        width: 200px;
        margin-left: -210px;
        padding: 5px 10px;
        font-family: Athelas, STHeiti, Microsoft Yahei, serif;
        font-size: 12px;
        border: 1px solid rgba(0, 0, 0, .07);
        border-radius: 5px;
        background-color: rgba(255, 255, 255, 0.98);
        background-clip: padding-box;
        -webkit-box-shadow: 1px 1px 2px rgba(0, 0, 0, .125);
        box-shadow: 1px 1px 2px rgba(0, 0, 0, .125);
        word-wrap: break-word;
        white-space: nowrap;
        -webkit-box-sizing: border-box;
        box-sizing: border-box;
        z-index: 999;
        cursor: pointer;
        max-height: 70%;
        overflow-y: auto;
        overflow-x: hidden;
    }

    .post-toc .post-toc-title {
        width: 100%;
        margin: 0 auto;
        font-size: 20px;
        font-weight: 400;
        text-transform: uppercase;
        text-align: center;
    }

    .post-toc .post-toc-content {
        font-size: 15px;
    }

    .post-toc .post-toc-content>nav>ul {
        margin: 10px 0;
    }

    .post-toc .post-toc-content ul {
        padding-left: 20px;
        list-style: square;
        margin: 0.5em;
        line-height: 1.8em;
    }

    .post-toc .post-toc-content ul ul {
        padding-left: 15px;
        display: none;
    }

    @media print,
    screen and (max-width:1057px) {
        .post-toc {
            display: none;
        }
    }
</style>
<div class="post-toc" style="position: absolute; top: 188px;">
    <h2 class="post-toc-title">文章目录</h2>
    <div class="post-toc-content">
        <nav id="TableOfContents">
  <ul>
    <li>
      <ul>
        <li></li>
      </ul>
    </li>
  </ul>

  <ul>
    <li><a href="#首先第一个就是mainactivity-but-flutterengine-was-expected">首先第一个就是MainActivity but FlutterEngine was expected</a></li>
    <li><a href="#第二个">第二个</a></li>
    <li><a href="#第三个unresolved-reference-flutterview">第三个Unresolved reference: flutterView</a></li>
    <li><a href="#第四个kotlin-oncreate-overrides-nothing">第四个kotlin &lsquo;onCreate&rsquo; overrides nothing</a></li>
  </ul>
</nav>
    </div>
</div>
<script type="text/javascript">
    $(document).ready(function () {
        var postToc = $(".post-toc");
        if (postToc.length) {
            var leftPos = $("#main").offset().left;
            if(leftPos<220){
                postToc.css({"width":leftPos-10,"margin-left":(0-leftPos)})
            }

            var t = postToc.offset().top - 20,
                a = {
                    start: {
                        position: "absolute",
                        top: t
                    },
                    process: {
                        position: "fixed",
                        top: 20
                    },
                };
            $(window).scroll(function () {
                var e = $(window).scrollTop();
                e < t ? postToc.css(a.start) : postToc.css(a.process)
            })
        }
    })
</script>
    <article class="post">
        <header>
            <h1 class="post-title">Flutter与原生通讯</h1>
        </header>
        <date class="post-meta meta-date">
            2021年8月14日
        </date>
        
        <div class="post-meta">
            <span>|</span>
            
            <span class="meta-category"><a href='/categories/Flutter'>Flutter</a></span>
            
        </div>
        
        
        <div class="post-meta">
            <span id="busuanzi_container_page_pv">|<span id="busuanzi_value_page_pv"></span><span>
                    阅读</span></span>
        </div>
        
        
        <div class="post-content">
            <p>今天和大家聊聊flutter与原生通讯的那些事儿</p>
<p>我主要负责android端</p>
<p>所以我会以Android端为例来进行刨析、</p>
<p>Flutter 混合开发系列 包含如下：</p>
<ul>
<li>嵌入原生View-Android</li>
<li>嵌入原生View-iOS</li>
<li><strong>与原生通信-MethodChannel</strong></li>
<li>与原生通信-BasicMessageChannel</li>
<li>与原生通信-EventChannel</li>
<li>添加 Flutter 到 Android Activity</li>
<li>添加 Flutter 到 Android Fragment</li>
<li>添加 Flutter 到 iOS</li>
</ul>
<p>Flutter与原生之间的通信依赖灵活的消息传递方式：</p>
<ul>
<li>应用的Flutter部分通过平台通道(platform channel)将消息发送到其应用程序的所在的宿主(iOS或Android)应用(原生应用)。</li>
<li>宿主监听平台通道，并接收该消息。然后它会调用该平台的API，并将响应发送回客户端，即应用程序的Flutter部分。</li>
</ul>
<blockquote>
<ol>
<li>MethodChannel  // Flutter与原生方法相互调用，用于方法掉用</li>
<li>BasicMessageChannel // Flutter与原生相互发送消息，用于数据传递</li>
<li>EventChannel // 原生发送消息，Flutter接收，用于数据流通信</li>
</ol>
</blockquote>
<p>
        <a data-fancybox="gallery" href="https://luckly007.oss-cn-beijing.aliyuncs.com/image/56ElhnJSyWvqpao.png">
            <img class="mx-auto" alt="" src="https://luckly007.oss-cn-beijing.aliyuncs.com/image/56ElhnJSyWvqpao.png" />
        </a>
    </p>
<h4 id="可以传递的数据结构">可以传递的数据结构</h4>
<table>
<thead>
<tr>
<th>Dart</th>
<th>Android</th>
<th>iOS</th>
</tr>
</thead>
<tbody>
<tr>
<td>null</td>
<td>null</td>
<td>nil(NSNull when nested)</td>
</tr>
<tr>
<td>bool</td>
<td>Java.lang.Boolean</td>
<td>NSNumber numberWithBool:</td>
</tr>
<tr>
<td>int</td>
<td>Java.lang.Integer</td>
<td>NSNumber numberWithInt:</td>
</tr>
<tr>
<td>int, if 32 bits not enough</td>
<td>Java.lang.Long</td>
<td>NSNumber numberWithLong:</td>
</tr>
<tr>
<td>int, if 64 bits not enough</td>
<td>Java.lang.BigInteger</td>
<td>FlutterStandardBigInteger</td>
</tr>
<tr>
<td>double</td>
<td>Java.lang.Double</td>
<td>NSNumber numberWithDouble</td>
</tr>
<tr>
<td>String</td>
<td>java.lang.String</td>
<td>NSString</td>
</tr>
<tr>
<td>Unit8List</td>
<td>byte[]</td>
<td>FlutterStandardTypedData typedDataWithBytes:</td>
</tr>
<tr>
<td>Int32List</td>
<td>int[]</td>
<td>FlutterStandardTypedData typedDataWithInt32:</td>
</tr>
<tr>
<td>Int64List</td>
<td>long[]</td>
<td>FlutterStandardTypedData typedDataWithInt64:</td>
</tr>
<tr>
<td>Float64List</td>
<td>double[]</td>
<td>FlutterStandardTypedData typedDataWithFloat64:</td>
</tr>
<tr>
<td>List</td>
<td>Java.util.ArrayList</td>
<td>NSArray</td>
</tr>
<tr>
<td>Map</td>
<td>Java.util.HashMap</td>
<td>NSDictionary</td>
</tr>
</tbody>
</table>
<p>Flutter 与 Native 端通信是异步的。</p>
<h4 id="通信与平台线程">通信与平台线程</h4>
<p>Native 端主动发送数据给 Flutter时，Native 端代码需要在主线程中执行，Android 端从子线程跳转到主线程方式：</p>
<p>Kotlin 代码：</p>
<div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-kotlin" data-lang="kotlin">Handler(Looper.getMainLooper()).post {
  
}
 
</code></pre></div><p>Java 代码：</p>
<div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-java" data-lang="java"><span style="color:#66d9ef">new</span> Handler<span style="color:#f92672">(</span>Looper<span style="color:#f92672">.</span><span style="color:#a6e22e">getMainLooper</span><span style="color:#f92672">()).</span><span style="color:#a6e22e">post</span><span style="color:#f92672">(</span><span style="color:#66d9ef">new</span> Runnable<span style="color:#f92672">()</span> <span style="color:#f92672">{</span>
  <span style="color:#a6e22e">@Override</span>
  <span style="color:#66d9ef">public</span> <span style="color:#66d9ef">void</span> <span style="color:#a6e22e">run</span><span style="color:#f92672">()</span> <span style="color:#f92672">{</span>
    
  <span style="color:#f92672">}</span>
<span style="color:#f92672">});</span>
 
</code></pre></div><p>如果可以获取到当前 Activity，也可以使用如下方式：</p>
<div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-kotlin" data-lang="kotlin">activity.runOnUiThread {
   
}
 
</code></pre></div><p>iOS 端从子线程跳转到主线程方式：</p>
<p>Objective-C 代码：</p>
<div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-objective-c" data-lang="objective-c">dispatch_async(dispatch_get_main_queue(), <span style="color:#f92672">^</span>{
  
});
 
</code></pre></div><p>Swift 代码：</p>
<div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-swift" data-lang="swift">DispatchQueue.main.async {
  
}
</code></pre></div><h4 id="methodchannel互相调用方法">MethodChannel(互相调用方法)</h4>
<p><strong>Android调用Flutter方法：</strong></p>
<p>Android:</p>
<ol>
<li>初始化MethodChannel</li>
</ol>
<div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-dart" data-lang="dart"><span style="color:#66d9ef">static</span> <span style="color:#66d9ef">const</span> batteryChannel <span style="color:#f92672">=</span> <span style="color:#66d9ef">const</span> MethodChannel(<span style="color:#e6db74">&#39;battery&#39;</span>);
</code></pre></div><pre><code>//初始化，传递1. flutterView(MainActivity中getFlutter获取)，2. name常量，Flutter中使用同名常量
MethodChannel methodChannel = new MethodChannel(flutterView, “battery”);

</code></pre><p>battery是 MethodChannel 的名称，原生端要与之对应。</p>
<p>发送消息：</p>
<div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-dart" data-lang="dart">   <span style="color:#66d9ef">var</span> result <span style="color:#f92672">=</span> <span style="color:#66d9ef">await</span> batteryChannel.invokeMethod(<span style="color:#e6db74">&#39;getBatteryLevel&#39;</span>);
</code></pre></div><div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-dart" data-lang="dart"><span style="color:#66d9ef">var</span> result <span style="color:#f92672">=</span> <span style="color:#66d9ef">await</span> channel.invokeMethod(<span style="color:#e6db74">&#39;sendData&#39;</span>,{<span style="color:#e6db74">&#39;name&#39;</span><span style="color:#f92672">:</span> <span style="color:#e6db74">&#39;luckly&#39;</span>, <span style="color:#e6db74">&#39;age&#39;</span><span style="color:#f92672">:</span> <span style="color:#ae81ff">18</span>})

</code></pre></div><ul>
<li>第一个参数表示<strong>method</strong>，方法名称，原生端会解析此参数。</li>
<li>第二个参数表示参数，类型任意，多个参数通常使用<strong>Map</strong>。</li>
<li>返回 <strong>Future</strong>，原生端返回的数据。</li>
</ul>
<ol>
<li>调用Flutter方法</li>
</ol>
<div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-java" data-lang="java"><span style="color:#66d9ef">private</span> <span style="color:#66d9ef">void</span> <span style="color:#a6e22e">invokeFlutterMethod</span><span style="color:#f92672">()</span> <span style="color:#f92672">{</span>
  <span style="color:#66d9ef">if</span> <span style="color:#f92672">(</span><span style="color:#66d9ef">this</span><span style="color:#f92672">.</span><span style="color:#a6e22e">mMethodChannel</span> <span style="color:#f92672">!=</span> <span style="color:#66d9ef">null</span><span style="color:#f92672">)</span> <span style="color:#f92672">{</span>
    <span style="color:#66d9ef">this</span><span style="color:#f92672">.</span><span style="color:#a6e22e">mMethodChannel</span><span style="color:#f92672">.</span><span style="color:#a6e22e">invokeMethod</span><span style="color:#f92672">(</span><span style="color:#e6db74">&#34;flutterMethod&#34;</span><span style="color:#f92672">,</span> <span style="color:#e6db74">&#34;native参数&#34;</span><span style="color:#f92672">,</span> <span style="color:#66d9ef">new</span> MethodChannel<span style="color:#f92672">.</span><span style="color:#a6e22e">Result</span><span style="color:#f92672">()</span> <span style="color:#f92672">{</span>
      <span style="color:#a6e22e">@Override</span>
      <span style="color:#66d9ef">public</span> <span style="color:#66d9ef">void</span> <span style="color:#a6e22e">success</span><span style="color:#f92672">(</span>Object o<span style="color:#f92672">)</span> <span style="color:#f92672">{</span>
        Toast<span style="color:#f92672">.</span><span style="color:#a6e22e">makeText</span><span style="color:#f92672">(</span>mContext<span style="color:#f92672">,</span> o<span style="color:#f92672">.</span><span style="color:#a6e22e">toString</span><span style="color:#f92672">(),</span> Toast<span style="color:#f92672">.</span><span style="color:#a6e22e">LENGTH_LONG</span><span style="color:#f92672">).</span><span style="color:#a6e22e">show</span><span style="color:#f92672">();</span>
      <span style="color:#f92672">}</span>
      <span style="color:#a6e22e">@Override</span>
      <span style="color:#66d9ef">public</span> <span style="color:#66d9ef">void</span> <span style="color:#a6e22e">error</span><span style="color:#f92672">(</span>String s<span style="color:#f92672">,</span> String s1<span style="color:#f92672">,</span> Object o<span style="color:#f92672">)</span> <span style="color:#f92672">{</span>
      <span style="color:#f92672">}</span>
      <span style="color:#a6e22e">@Override</span>
      <span style="color:#66d9ef">public</span> <span style="color:#66d9ef">void</span> <span style="color:#a6e22e">notImplemented</span><span style="color:#f92672">()</span> <span style="color:#f92672">{</span>
      <span style="color:#f92672">}</span>
    <span style="color:#f92672">});</span>
  <span style="color:#f92672">}</span>
<span style="color:#f92672">}</span>
 
</code></pre></div><p>通过MethodChannel调用invokeMethod(&ldquo;方法名&rdquo;,&ldquo;传递参数&rdquo;,[Flutter返回参数回调，非必须]);</p>
<p>Flutter:</p>
<ol>
<li>初始化MethodChannel</li>
</ol>
<pre><code>static const methodChannel = const MethodChannel('testflutter');
 
</code></pre><ol>
<li>添加处理方法到MethodChannel</li>
</ol>
<pre><code>methodChannel.setMethodCallHandler(_addNativeMethod);
 
</code></pre><ol>
<li>处理android调用的方法，根据方法名</li>
</ol>
<div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-dart" data-lang="dart">Future<span style="color:#f92672">&lt;</span><span style="color:#66d9ef">dynamic</span><span style="color:#f92672">&gt;</span> _addNativeMethod(MethodCall methodCall) <span style="color:#66d9ef">async</span> {
  <span style="color:#66d9ef">switch</span> (methodCall.method) {
    <span style="color:#66d9ef">case</span> <span style="color:#e6db74">&#39;flutterMethod&#39;</span><span style="color:#f92672">:</span>
      setState(() {
        _calledFromNative <span style="color:#f92672">=</span> <span style="color:#e6db74">&#39;flutter method called from native with param &#39;</span> <span style="color:#f92672">+</span> methodCall.arguments;
      });
      <span style="color:#66d9ef">return</span> <span style="color:#e6db74">&#39;flutter method called from native with param &#39;</span> <span style="color:#f92672">+</span> methodCall.arguments;
      <span style="color:#66d9ef">break</span>;
  }
}
<span style="color:#75715e">//其中，return返回的数据在Android的回调中接收
</span><span style="color:#75715e"></span> 
</code></pre></div><p><strong>Flutter调用Android方法：</strong></p>
<p>Android：</p>
<ol>
<li>初始化MethodChannel，并添加自定义plugin</li>
</ol>
<pre><code>MethodChannel methodChannel = new MethodChannel(flutterView, METHOD_CHANNEL);
methodChannel.setMethodCallHandler(plugin);
 
</code></pre><ol>
<li>自定义的plugin实现MethodChannel.MethodCallHandler接口的onMethodCall方法</li>
</ol>
<pre><code>@Override
public void onMethodCall(MethodCall methodCall, MethodChannel.Result result) {
  // Flutter调用Native的方法
  if (methodCall.method.equals(&quot;getBatteryLevel&quot;)) {
    int batteryLevel = getBatteryLevel();
    if (batteryLevel != -1) {
      result.success(batteryLevel);
    } else {
      result.error(&quot;UNAVALIABLE&quot;, &quot;battery level unavaliable&quot;, null);
    }
  } else {
    result.notImplemented();
  }
}
//在onMethodCall中监听Flutter调用什么名字的方法(此处getBatterLevel)，通过result返回方法的执行结果。
 
</code></pre><p>Flutter：</p>
<ol>
<li>初始化MethodChannel</li>
</ol>
<pre><code>static const methodChannel = const MethodChannel('testflutter');
 
</code></pre><ol>
<li>调用Android的方法，接收返回数据</li>
</ol>
<pre><code>//方法通道的方法是异步的
Future&lt;Null&gt; _getBatteryLevel() async {
  String batteryLevel;
  try {
    final int result = await methodChannel.invokeMethod('getBatteryLevel');
    batteryLevel = 'Battery level $result .';
  } on PlatformException catch (e) {
    batteryLevel = 'Battery level unknown ${e.message}';
  }  
  setState(() {
    _batteryLevel = batteryLevel;
  });
}
 
</code></pre><h4 id="basicmessagechannel互相发送消息">BasicMessageChannel(互相发送消息)</h4>
<p><strong>Android给Flutter发消息：</strong></p>
<p>Android：</p>
<ol>
<li>初始化BasicMethodChannel</li>
</ol>
<pre><code>BasicMessageChannel messageChannel = new BasicMessageChannel&lt;&gt;(flutterView, &quot;messageChannel&quot;, StandardMessageCodec.INSTANCE);
 
</code></pre><ol>
<li>调用发送消息的方法</li>
</ol>
<pre><code>private void sendMessageToFlutter() {
  if (this.mBasicMessageChannel != null) {
    this.mBasicMessageChannel.send(&quot;Message From Native&quot;);
  }
}
 
</code></pre><p>Flutter：</p>
<ol>
<li>初始化BasicMessageChannel</li>
</ol>
<pre><code>static const basicMessageChannel = BasicMessageChannel('messageChannel', StandardMessageCodec());
 
</code></pre><ol>
<li>添加接收信息处理方法</li>
</ol>
<pre><code>void _listenMessageFromNative() {
  basicMessageChannel.setMessageHandler(_receiveMessageFromNative);
}
 
</code></pre><ol>
<li>处理接收的数据</li>
</ol>
<pre><code>//Flutter接收Native发来的消息
Future&lt;dynamic&gt; _receiveMessageFromNative(Object result) async {
  setState(() {
    _messageFromNative = result.toString();
  });
}
 
</code></pre><p><strong>Flutter给Android发消息：</strong></p>
<p>Android：</p>
<ol>
<li>初始化BasicMessageChannel并添加plugin给handler</li>
</ol>
<pre><code>BasicMessageChannel messageChannel = new BasicMessageChannel&lt;&gt;(flutterView, &quot;messageChannel&quot;, StandardMessageCodec.INSTANCE);
messageChannel.setMessageHandler(plugin);
 
</code></pre><ol>
<li>plugin实现BasicMessageChannel.MessageHandler接口的onMessage方法，处理接收到的信息</li>
</ol>
<pre><code>@Override
public void onMessage(Object o, BasicMessageChannel.Reply reply) {
  Toast.makeText(mContext, o.toString(), Toast.LENGTH_LONG).show();
  reply.reply(o.toString()+&quot; back from native&quot;);
}
//reply返回数据给Flutter
 
</code></pre><p>Flutter：</p>
<ol>
<li>初始化BasicMessageChannel</li>
</ol>
<pre><code>static const basicMessageChannel = BasicMessageChannel('messageChannel', StandardMessageCodec());
 
</code></pre><ol>
<li>发送消息给Android并接收返回数据</li>
</ol>
<pre><code>Future&lt;dynamic&gt; _sendMessageToNative(String message) async {
  String reply = await basicMessageChannel.send(message);
  print(reply);
  setState(() {
    _replayFromNative = reply;
  });
  return reply;
}
 
</code></pre><h4 id="eventchannel原生发送消息flutter接收">EventChannel(原生发送消息，Flutter接收)</h4>
<p>Android：</p>
<ol>
<li>初始化EventChannel并添加plugin给handler</li>
</ol>
<pre><code>EventChannel eventChannel = new EventChannel(flutterView, EVENT_CHANNEL);
eventChannel.setStreamHandler(plugin);
 
</code></pre><ol>
<li>plugin实现EventChannel.StreamHandler接口及onListen、onCancel方法</li>
<li>在onListen中通过EventChannel.EventShink的实例发消息给Flutter</li>
</ol>
<pre><code>@Override
public void onListen(Object o, EventChannel.EventSink eventSink) {
  BroadcastReceiver chargingBroadcastReceiver = createChargingBroadcaseReceiver(eventSink);
  mContext.registerReceiver(chargingBroadcastReceiver,new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
}
@Override
public void onCancel(Object o) {
}
private BroadcastReceiver createChargingBroadcaseReceiver(EventChannel.EventSink eventSink) {
  return new BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {
      int status = intent.getIntExtra(BatteryManager.EXTRA_STATUS, -1);
      if (status == BatteryManager.BATTERY_STATUS_UNKNOWN) {
        eventSink.error(&quot;UNAVALIABLE&quot;, &quot;charging status is unavailable&quot;, null);
      } else {
        boolean isCharging = status == BatteryManager.BATTERY_STATUS_CHARGING;
        eventSink.success(isCharging ? &quot;charging&quot; : &quot;disCharging&quot;);
      }
    }
  };
}

</code></pre><p>Flutter:</p>
<ol>
<li>初始化EventChannel</li>
</ol>
<pre><code>static const _eventChannel = const EventChannel('charging');

</code></pre><ol>
<li>添加接收数据方法</li>
</ol>
<pre><code>void listenNativeEvent() {
  _eventChannel.receiveBroadcastStream().listen(_onEvent, onError: _onError);
}
//接收返回的数据
void _onEvent(Object object) {
  String s = &quot;Battery is ${object == 'charging' ? '' : 'dis'}Charging&quot;;
  setState(() {
    _batteryStatus = s;
  });
}

</code></pre><h4 id="桥接view给flutter使用">桥接View给Flutter使用</h4>
<p>Android：</p>
<ol>
<li>自定义View，继承自PlatformView</li>
</ol>
<pre><code>public class MyTextview implements PlatformView {
  TextView t;
  public MyTextview(Context context, MessageCodec&lt;Object&gt; messenger, int id, Map&lt;String, Object&gt; params){
    TextView textView = new TextView(context);
    //获取参数，是否有传递参数过来
    if (params.containsKey(&quot;text&quot;)){
      textView.setText(params.get(&quot;text&quot;).toString());
    }
    this.t = textView;
  }
  @Override
  public View getView() {
    return t;
  }
  
  @Override
  public void dispose() {
  }
}

</code></pre><ol>
<li>实现PlatformViewFactory</li>
</ol>
<pre><code>public class TextViewFactory extends PlatformViewFactory {
  private MessageCodec&lt;Object&gt; messageCodec;
  public TextViewFactory(MessageCodec&lt;Object&gt; createArgsCodec) {
    super(createArgsCodec);
    this.messageCodec = createArgsCodec;
  }
  
  @Override
  public PlatformView create(Context context, int i, Object o) {
    return new MyTextview(context, messageCodec, i, (Map&lt;String, Object&gt;) o);
  }
}

</code></pre><ol>
<li>注册View给Flutter使用</li>
</ol>
<pre><code>registrar.platformViewRegistry().registerViewFactory(&quot;TextView&quot;, new TextViewFactory(new StandardMessageCodec()));
//起名叫TextView，给Flutter用做viewType
 
</code></pre><p>Flutter:</p>
<ol>
<li>使用桥接的View</li>
</ol>
<pre><code>AndroidView(
  viewType: 'TextView',
  creationParams: {'text': 'TTTeeeXXXttt'},
  creationParamsCodec: new StandardMessageCodec(),
),//其中creationParams，creationParamsCodec必须同时存在或不存在
 
</code></pre><h1 id="以下是获取电量的方法">以下是获取电量的方法：</h1>
<p>flutter侧：</p>
<div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-dart" data-lang="dart"><span style="color:#66d9ef">import</span> <span style="color:#e6db74">&#39;package:flutter/material.dart&#39;</span>;
<span style="color:#66d9ef">import</span> <span style="color:#e6db74">&#39;package:flutter/services.dart&#39;</span>;

<span style="color:#66d9ef">void</span> main() {
  runApp(MyApp());
}

<span style="color:#66d9ef">class</span> <span style="color:#a6e22e">MyApp</span> <span style="color:#66d9ef">extends</span> StatelessWidget {
  <span style="color:#75715e">// This widget is the root of your application.
</span><span style="color:#75715e"></span>  <span style="color:#960050;background-color:#1e0010">@</span>override
  Widget build(BuildContext context) {
    <span style="color:#66d9ef">return</span> MaterialApp(
      debugShowCheckedModeBanner: <span style="color:#66d9ef">false</span>,
      theme: ThemeData(
        primarySwatch: Colors.red,
      ),
      home: HomePage(),
    );
  }
}

<span style="color:#66d9ef">class</span> <span style="color:#a6e22e">HomePage</span> <span style="color:#66d9ef">extends</span> StatefulWidget {
  HomePage({Key key}) <span style="color:#f92672">:</span> <span style="color:#66d9ef">super</span>(key: key);

  <span style="color:#960050;background-color:#1e0010">@</span>override
  _HomePageState createState() <span style="color:#f92672">=&gt;</span> _HomePageState();
}

<span style="color:#66d9ef">class</span> <span style="color:#a6e22e">_HomePageState</span> <span style="color:#66d9ef">extends</span> State<span style="color:#f92672">&lt;</span>HomePage<span style="color:#f92672">&gt;</span> {
  <span style="color:#66d9ef">String</span> _batteryPercentage <span style="color:#f92672">=</span> <span style="color:#e6db74">&#34;现在的电量&#34;</span>;
  <span style="color:#960050;background-color:#1e0010">@</span>override
  Widget build(BuildContext context) {
    <span style="color:#66d9ef">return</span> Scaffold(
      appBar: AppBar(
        title: Text(<span style="color:#e6db74">&#34;原生通讯&#34;</span>),
      ),
      body: Column(
        mainAxisAlignment: MainAxisAlignment.center,
        crossAxisAlignment: CrossAxisAlignment.center,
        children: [
          MaterialButton(
            onPressed: _getBatteryInformation,
            color: Colors.blue,
            child: Padding(
              padding: EdgeInsets.all(<span style="color:#ae81ff">36</span>),
              child: Text(
                <span style="color:#e6db74">&#34;点我&#34;</span>,
                style: TextStyle(color: Colors.red, fontSize: <span style="color:#ae81ff">50</span>),
              ),
            ),
          ),
          Container(
            height: <span style="color:#ae81ff">20</span>,
          ),
          Text(
            _batteryPercentage,
            style: TextStyle(color: Colors.blue, fontSize: <span style="color:#ae81ff">30</span>),
          ),
        ],
      ),
    );
  }

  <span style="color:#66d9ef">static</span> <span style="color:#66d9ef">const</span> batteryChannel <span style="color:#f92672">=</span> <span style="color:#66d9ef">const</span> MethodChannel(<span style="color:#e6db74">&#39;battery&#39;</span>);

  Future<span style="color:#f92672">&lt;</span><span style="color:#66d9ef">void</span><span style="color:#f92672">&gt;</span> _getBatteryInformation() <span style="color:#66d9ef">async</span> {
    <span style="color:#66d9ef">String</span> batteryPercentage;
    <span style="color:#66d9ef">try</span> {
      <span style="color:#66d9ef">var</span> result <span style="color:#f92672">=</span> <span style="color:#66d9ef">await</span> batteryChannel.invokeMethod(<span style="color:#e6db74">&#39;getBatteryLevel&#39;</span>);
      batteryPercentage <span style="color:#f92672">=</span> <span style="color:#e6db74">&#39;现在的电量是 </span><span style="color:#e6db74">$</span>result<span style="color:#e6db74">%&#39;</span>;
    } on PlatformException <span style="color:#66d9ef">catch</span> (e) {
      batteryPercentage <span style="color:#f92672">=</span> <span style="color:#e6db74">&#34;Failed to get battery level: &#39;</span><span style="color:#e6db74">${</span>e.message<span style="color:#e6db74">}</span><span style="color:#e6db74">&#39;.&#34;</span>;
    }

    setState(() {
      _batteryPercentage <span style="color:#f92672">=</span> batteryPercentage;
    });
  }
}

</code></pre></div><div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-java" data-lang="java"><span style="color:#f92672">package</span> com.example.flutterer_sliver
<span style="color:#f92672">import</span> android.content.Context
<span style="color:#f92672">import</span> android.content.ContextWrapper
<span style="color:#f92672">import</span> android.content.Intent
<span style="color:#f92672">import</span> android.content.IntentFilter
<span style="color:#f92672">import</span> android.os.BatteryManager
<span style="color:#f92672">import</span> android.os.Build
<span style="color:#f92672">import</span> android.os.Bundle

<span style="color:#f92672">import</span> io.flutter.embedding.android.FlutterActivity<span style="color:#f92672">;</span>
<span style="color:#f92672">import</span> io.flutter.plugins.GeneratedPluginRegistrant
<span style="color:#f92672">import</span> io.flutter.plugin.common.MethodCall
<span style="color:#f92672">import</span> io.flutter.plugin.common.MethodChannel.MethodCallHandler
<span style="color:#f92672">import</span> io.flutter.plugin.common.MethodChannel


<span style="color:#66d9ef">class</span> <span style="color:#a6e22e">MainActivity</span><span style="color:#f92672">:</span> FlutterActivity<span style="color:#f92672">()</span> <span style="color:#f92672">{</span>
override fun <span style="color:#a6e22e">onCreate</span><span style="color:#f92672">(</span>savedInstanceState<span style="color:#f92672">:</span> Bundle<span style="color:#f92672">?)</span> <span style="color:#f92672">{</span>
    <span style="color:#66d9ef">super</span><span style="color:#f92672">.</span><span style="color:#a6e22e">onCreate</span><span style="color:#f92672">(</span>savedInstanceState<span style="color:#f92672">)</span>
 

    MethodChannel<span style="color:#f92672">(</span>flutterEngine<span style="color:#f92672">?.</span><span style="color:#a6e22e">getDartExecutor</span><span style="color:#f92672">(),</span> <span style="color:#e6db74">&#34;battery&#34;</span><span style="color:#f92672">).</span><span style="color:#a6e22e">setMethodCallHandler</span> <span style="color:#f92672">{</span> call<span style="color:#f92672">,</span> result <span style="color:#f92672">-&gt;</span>
      <span style="color:#66d9ef">if</span> <span style="color:#f92672">(</span>call<span style="color:#f92672">.</span><span style="color:#a6e22e">method</span> <span style="color:#f92672">==</span> <span style="color:#e6db74">&#34;getBatteryLevel&#34;</span><span style="color:#f92672">)</span> <span style="color:#f92672">{</span>
        val batteryLevel <span style="color:#f92672">=</span> getBatteryLevel<span style="color:#f92672">()</span>

        <span style="color:#66d9ef">if</span> <span style="color:#f92672">(</span>batteryLevel <span style="color:#f92672">!=</span> <span style="color:#f92672">-</span>1<span style="color:#f92672">)</span> <span style="color:#f92672">{</span>
          result<span style="color:#f92672">.</span><span style="color:#a6e22e">success</span><span style="color:#f92672">(</span>batteryLevel<span style="color:#f92672">)</span>
        <span style="color:#f92672">}</span> <span style="color:#66d9ef">else</span> <span style="color:#f92672">{</span>
          result<span style="color:#f92672">.</span><span style="color:#a6e22e">error</span><span style="color:#f92672">(</span><span style="color:#e6db74">&#34;Unavailable&#34;</span><span style="color:#f92672">,</span> <span style="color:#e6db74">&#34;Battery level is not available&#34;</span><span style="color:#f92672">,</span> <span style="color:#66d9ef">null</span><span style="color:#f92672">)</span>
        <span style="color:#f92672">}</span>
      <span style="color:#f92672">}</span>
    <span style="color:#f92672">}</span>
  <span style="color:#f92672">}</span>

  <span style="color:#66d9ef">private</span> fun <span style="color:#a6e22e">getBatteryLevel</span><span style="color:#f92672">()</span> <span style="color:#f92672">:</span> Int <span style="color:#f92672">{</span>
    val batteryLevel<span style="color:#f92672">:</span> Int

    <span style="color:#a6e22e">if</span> <span style="color:#f92672">(</span>Build<span style="color:#f92672">.</span><span style="color:#a6e22e">VERSION</span><span style="color:#f92672">.</span><span style="color:#a6e22e">SDK_INT</span> <span style="color:#f92672">&gt;=</span> Build<span style="color:#f92672">.</span><span style="color:#a6e22e">VERSION_CODES</span><span style="color:#f92672">.</span><span style="color:#a6e22e">LOLLIPOP</span><span style="color:#f92672">)</span> <span style="color:#f92672">{</span>

      val batteryManager <span style="color:#f92672">=</span> getSystemService<span style="color:#f92672">(</span>Context<span style="color:#f92672">.</span><span style="color:#a6e22e">BATTERY_SERVICE</span><span style="color:#f92672">)</span> as BatteryManager
      batteryLevel <span style="color:#f92672">=</span> batteryManager<span style="color:#f92672">.</span><span style="color:#a6e22e">getIntProperty</span><span style="color:#f92672">(</span>BatteryManager<span style="color:#f92672">.</span><span style="color:#a6e22e">BATTERY_PROPERTY_CAPACITY</span><span style="color:#f92672">)</span>

    <span style="color:#f92672">}</span> <span style="color:#66d9ef">else</span> <span style="color:#f92672">{</span>

      val intent <span style="color:#f92672">=</span> ContextWrapper<span style="color:#f92672">(</span>applicationContext<span style="color:#f92672">).</span><span style="color:#a6e22e">registerReceiver</span><span style="color:#f92672">(</span><span style="color:#66d9ef">null</span><span style="color:#f92672">,</span> IntentFilter<span style="color:#f92672">(</span>
              Intent<span style="color:#f92672">.</span><span style="color:#a6e22e">ACTION_BATTERY_CHANGED</span><span style="color:#f92672">))</span>
      batteryLevel <span style="color:#f92672">=</span> intent<span style="color:#f92672">!!.</span><span style="color:#a6e22e">getIntExtra</span><span style="color:#f92672">(</span>BatteryManager<span style="color:#f92672">.</span><span style="color:#a6e22e">EXTRA_LEVEL</span><span style="color:#f92672">,</span> <span style="color:#f92672">-</span>1<span style="color:#f92672">)</span> <span style="color:#f92672">*</span> 100 <span style="color:#f92672">/</span> intent<span style="color:#f92672">.</span><span style="color:#a6e22e">getIntExtra</span><span style="color:#f92672">(</span>BatteryManager<span style="color:#f92672">.</span><span style="color:#a6e22e">EXTRA_SCALE</span><span style="color:#f92672">,</span> <span style="color:#f92672">-</span>1<span style="color:#f92672">)</span>

    <span style="color:#f92672">}</span>

    <span style="color:#66d9ef">return</span> batteryLevel
  <span style="color:#f92672">}</span>

<span style="color:#f92672">}</span>
</code></pre></div><p>在做通讯的时候，flutter侧的代码比较好写，但是android端的就比较奇葩了</p>
<p>遇到的错误也是各式各样</p>
<h2 id="首先第一个就是mainactivity-but-flutterengine-was-expected">首先第一个就是MainActivity but FlutterEngine was expected</h2>
<p>Type mismatch: inferred type is MainActivity but FlutterEngine was expected</p>
<p>解决办法：</p>
<p>参考链接  <a href="https://stackoverflow.com/questions/63349813/type-mismatch-inferred-type-is-mainactivity-but-flutterengine-was-expected">https://stackoverflow.com/questions/63349813/type-mismatch-inferred-type-is-mainactivity-but-flutterengine-was-expected</a></p>
<p>Please remove <code>GeneratedPluginRegistrant.registerWith(flutterEngine);</code> from <code>MainActivity.kt</code> and update as follows.</p>
<div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-haskell" data-lang="haskell"><span style="color:#66d9ef">import</span> io.flutter.embedding.android.FlutterActivity

<span style="color:#66d9ef">class</span> <span style="color:#66d9ef">MainActivity:</span> <span style="color:#66d9ef">FlutterActivity</span>() {
}
</code></pre></div><h2 id="第二个">第二个</h2>
<p>解决办法</p>
<div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-dart" data-lang="dart">package com.codingwithboris.platformspecific

<span style="color:#66d9ef">import</span> android<span style="color:#960050;background-color:#1e0010">.</span>content<span style="color:#960050;background-color:#1e0010">.</span>Context
import android<span style="color:#960050;background-color:#1e0010">.</span>content<span style="color:#960050;background-color:#1e0010">.</span>ContextWrapper
import android<span style="color:#960050;background-color:#1e0010">.</span>content<span style="color:#960050;background-color:#1e0010">.</span>Intent
import android<span style="color:#960050;background-color:#1e0010">.</span>content<span style="color:#960050;background-color:#1e0010">.</span>IntentFilter
import android<span style="color:#960050;background-color:#1e0010">.</span>os<span style="color:#960050;background-color:#1e0010">.</span>BatteryManager
import android<span style="color:#960050;background-color:#1e0010">.</span>os<span style="color:#960050;background-color:#1e0010">.</span>Build
import android<span style="color:#960050;background-color:#1e0010">.</span>os<span style="color:#960050;background-color:#1e0010">.</span>Bundle

import io<span style="color:#960050;background-color:#1e0010">.</span>flutter<span style="color:#960050;background-color:#1e0010">.</span>app<span style="color:#960050;background-color:#1e0010">.</span>FlutterActivity
import io<span style="color:#960050;background-color:#1e0010">.</span>flutter<span style="color:#960050;background-color:#1e0010">.</span>plugins<span style="color:#960050;background-color:#1e0010">.</span>GeneratedPluginRegistrant
import io<span style="color:#960050;background-color:#1e0010">.</span>flutter<span style="color:#960050;background-color:#1e0010">.</span>plugin<span style="color:#960050;background-color:#1e0010">.</span>common<span style="color:#960050;background-color:#1e0010">.</span>MethodCall
import io<span style="color:#960050;background-color:#1e0010">.</span>flutter<span style="color:#960050;background-color:#1e0010">.</span>plugin<span style="color:#960050;background-color:#1e0010">.</span>common<span style="color:#960050;background-color:#1e0010">.</span>MethodChannel<span style="color:#960050;background-color:#1e0010">.</span>MethodCallHandler
import io<span style="color:#960050;background-color:#1e0010">.</span>flutter<span style="color:#960050;background-color:#1e0010">.</span>plugin<span style="color:#960050;background-color:#1e0010">.</span>common<span style="color:#960050;background-color:#1e0010">.</span>MethodChannel



class MainActivity<span style="color:#960050;background-color:#1e0010">:</span> FlutterActivity<span style="color:#960050;background-color:#1e0010">()</span> <span style="color:#960050;background-color:#1e0010">{</span>

  override fun onCreate<span style="color:#960050;background-color:#1e0010">(</span>savedInstanceState<span style="color:#960050;background-color:#1e0010">:</span> Bundle<span style="color:#960050;background-color:#1e0010">?)</span> <span style="color:#960050;background-color:#1e0010">{</span>
    super<span style="color:#960050;background-color:#1e0010">.</span>onCreate<span style="color:#960050;background-color:#1e0010">(</span>savedInstanceState<span style="color:#960050;background-color:#1e0010">)</span>
    GeneratedPluginRegistrant<span style="color:#960050;background-color:#1e0010">.</span>registerWith<span style="color:#960050;background-color:#1e0010">(</span>this<span style="color:#960050;background-color:#1e0010">)</span> <span style="color:#960050;background-color:#1e0010">//此行注释去</span>

    MethodChannel<span style="color:#960050;background-color:#1e0010">(</span>flutterView, <span style="color:#e6db74">&#34;battery&#34;</span><span style="color:#960050;background-color:#1e0010">).</span>setMethodCallHandler <span style="color:#960050;background-color:#1e0010">{</span> call, result <span style="color:#960050;background-color:#1e0010">-&gt;</span>
      if <span style="color:#960050;background-color:#1e0010">(</span>call<span style="color:#960050;background-color:#1e0010">.</span>method <span style="color:#960050;background-color:#1e0010">==</span> <span style="color:#e6db74">&#34;getBatteryLevel&#34;</span><span style="color:#960050;background-color:#1e0010">)</span> <span style="color:#960050;background-color:#1e0010">{</span>
        val batteryLevel <span style="color:#960050;background-color:#1e0010">=</span> getBatteryLevel<span style="color:#960050;background-color:#1e0010">()</span>

        if <span style="color:#960050;background-color:#1e0010">(</span>batteryLevel <span style="color:#960050;background-color:#1e0010">!=</span> <span style="color:#960050;background-color:#1e0010">-1)</span> <span style="color:#960050;background-color:#1e0010">{</span>
          result<span style="color:#960050;background-color:#1e0010">.</span>success<span style="color:#960050;background-color:#1e0010">(</span>batteryLevel<span style="color:#960050;background-color:#1e0010">)</span>
        <span style="color:#960050;background-color:#1e0010">}</span> else <span style="color:#960050;background-color:#1e0010">{</span>
          result<span style="color:#960050;background-color:#1e0010">.</span>error<span style="color:#960050;background-color:#1e0010">(</span><span style="color:#e6db74">&#34;Unavailable&#34;</span>, <span style="color:#e6db74">&#34;Battery level is not available&#34;</span>, null<span style="color:#960050;background-color:#1e0010">)</span>
        <span style="color:#960050;background-color:#1e0010">}</span>
      <span style="color:#960050;background-color:#1e0010">}</span>
    <span style="color:#960050;background-color:#1e0010">}</span>
  <span style="color:#960050;background-color:#1e0010">}</span>

  private fun getBatteryLevel<span style="color:#960050;background-color:#1e0010">()</span> <span style="color:#960050;background-color:#1e0010">:</span> Int <span style="color:#960050;background-color:#1e0010">{</span>
    val batteryLevel<span style="color:#960050;background-color:#1e0010">:</span> Int

    if <span style="color:#960050;background-color:#1e0010">(</span>Build<span style="color:#960050;background-color:#1e0010">.</span>VERSION<span style="color:#960050;background-color:#1e0010">.</span>SDK_INT <span style="color:#960050;background-color:#1e0010">&gt;=</span> Build<span style="color:#960050;background-color:#1e0010">.</span>VERSION_CODES<span style="color:#960050;background-color:#1e0010">.</span>LOLLIPOP<span style="color:#960050;background-color:#1e0010">)</span> <span style="color:#960050;background-color:#1e0010">{</span>

      val batteryManager <span style="color:#960050;background-color:#1e0010">=</span> getSystemService<span style="color:#960050;background-color:#1e0010">(</span>Context<span style="color:#960050;background-color:#1e0010">.</span>BATTERY_SERVICE<span style="color:#960050;background-color:#1e0010">)</span> <span style="color:#66d9ef">as</span> BatteryManager
      batteryLevel <span style="color:#960050;background-color:#1e0010">=</span> batteryManager<span style="color:#960050;background-color:#1e0010">.</span>getIntProperty<span style="color:#960050;background-color:#1e0010">(</span>BatteryManager<span style="color:#960050;background-color:#1e0010">.</span>BATTERY_PROPERTY_CAPACITY<span style="color:#960050;background-color:#1e0010">)</span>

    <span style="color:#960050;background-color:#1e0010">}</span> else <span style="color:#960050;background-color:#1e0010">{</span>

      val intent <span style="color:#960050;background-color:#1e0010">=</span> ContextWrapper<span style="color:#960050;background-color:#1e0010">(</span>applicationContext<span style="color:#960050;background-color:#1e0010">).</span>registerReceiver<span style="color:#960050;background-color:#1e0010">(</span>null, IntentFilter<span style="color:#960050;background-color:#1e0010">(</span>
              Intent<span style="color:#960050;background-color:#1e0010">.</span>ACTION_BATTERY_CHANGED<span style="color:#960050;background-color:#1e0010">))</span>
      batteryLevel <span style="color:#960050;background-color:#1e0010">=</span> intent<span style="color:#960050;background-color:#1e0010">!!.</span>getIntExtra<span style="color:#960050;background-color:#1e0010">(</span>BatteryManager<span style="color:#960050;background-color:#1e0010">.</span>EXTRA_LEVEL, <span style="color:#960050;background-color:#1e0010">-1)</span> <span style="color:#960050;background-color:#1e0010">*</span> <span style="color:#960050;background-color:#1e0010">100</span> <span style="color:#960050;background-color:#1e0010">/</span> intent<span style="color:#960050;background-color:#1e0010">.</span>getIntExtra<span style="color:#960050;background-color:#1e0010">(</span>BatteryManager<span style="color:#960050;background-color:#1e0010">.</span>EXTRA_SCALE, <span style="color:#960050;background-color:#1e0010">-1)</span>

    <span style="color:#960050;background-color:#1e0010">}</span>

    return batteryLevel
  <span style="color:#960050;background-color:#1e0010">}</span>
<span style="color:#960050;background-color:#1e0010">}</span>
</code></pre></div><p>如果使用：</p>
<div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-haskell" data-lang="haskell"><span style="color:#66d9ef">import</span> io.flutter.embedding.android.FlutterActivity
</code></pre></div><p>代替</p>
<div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-haskell" data-lang="haskell"><span style="color:#66d9ef">import</span> io.flutter.app.FlutterActivity
</code></pre></div><p>我可以用</p>
<div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-kotlin" data-lang="kotlin"><span style="color:#66d9ef">override</span> <span style="color:#66d9ef">fun</span> <span style="color:#a6e22e">configureFlutterEngine</span>(flutterEngine: FlutterEngine) {
        GeneratedPluginRegistrant.registerWith(flutterEngine);
    }
</code></pre></div><p>参考链接https://stackoverflow.com/questions/59323505/flutteractivity-methodchannel-and-flutterview</p>
<h2 id="第三个unresolved-reference-flutterview">第三个Unresolved reference: flutterView</h2>
<div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-yaml" data-lang="yaml"><span style="color:#f92672">Unresolved reference</span>: <span style="color:#ae81ff">flutterView</span>
</code></pre></div><p>解决办法 ：  使用 flutterEngine.getDartExecutor() 代替 flutterView。</p>
<div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-dart" data-lang="dart"><span style="color:#66d9ef">class</span> <span style="color:#a6e22e">MainActivity</span><span style="color:#f92672">:</span> FlutterActivity() {

  override fun onCreate(savedInstanceState: Bundle<span style="color:#f92672">?</span>) {
    <span style="color:#66d9ef">super</span>.onCreate(savedInstanceState)
    GeneratedPluginRegistrant.registerWith(<span style="color:#66d9ef">this</span>) <span style="color:#75715e">//此行注释去
</span><span style="color:#75715e"></span>
    MethodChannel(flutterView, <span style="color:#e6db74">&#34;battery&#34;</span>).setMethodCallHandler { call, result <span style="color:#f92672">-&gt;</span>
      <span style="color:#66d9ef">if</span> (call.method <span style="color:#f92672">==</span> <span style="color:#e6db74">&#34;getBatteryLevel&#34;</span>) {
        val batteryLevel <span style="color:#f92672">=</span> getBatteryLevel()

        <span style="color:#66d9ef">if</span> (batteryLevel <span style="color:#f92672">!=</span> <span style="color:#f92672">-</span><span style="color:#ae81ff">1</span>) {
          result.success(batteryLevel)
        } <span style="color:#66d9ef">else</span> {
          result.error(<span style="color:#e6db74">&#34;Unavailable&#34;</span>, <span style="color:#e6db74">&#34;Battery level is not available&#34;</span>, <span style="color:#66d9ef">null</span>)
        }
      }
    }
  }
</code></pre></div><p>参考链接：</p>
<p><a href="https://stackoverflow.com/questions/59323505/flutteractivity-methodchannel-and-flutterview">https://stackoverflow.com/questions/59323505/flutteractivity-methodchannel-and-flutterview</a></p>
<h2 id="第四个kotlin-oncreate-overrides-nothing">第四个kotlin &lsquo;onCreate&rsquo; overrides nothing</h2>
<p>解决办法</p>
<p>上次更新中似乎有些功能发生了变化，只需<code>?</code>从<code>Bundle</code></p>
<p>像这样：</p>
<div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-kotlin" data-lang="kotlin"><span style="color:#66d9ef">override</span> <span style="color:#66d9ef">fun</span> <span style="color:#a6e22e">onCreate</span>(savedInstanceState: Bundle) {
    <span style="color:#66d9ef">super</span>.onCreate(savedInstanceState)
}
</code></pre></div><p>参考链接</p>
<p><a href="https://stackoverflow.com/questions/47049471/kotlin-oncreate-overrides-nothing">https://stackoverflow.com/questions/47049471/kotlin-oncreate-overrides-nothing</a>)</p>
<p>致谢：https://github.com/boriszv/Programming-Addict-Code-Examples/tree/master/call_platform_specific_code/platform_specific</p>
<p><a href="https://blog.csdn.net/ffa_ijj/article/details/90449561">https://blog.csdn.net/ffa_ijj/article/details/90449561</a></p>

        </div>

        
<div class="post-archive">
    <ul class="post-copyright">
        <li><strong>原文作者：</strong><a rel="author" href="https://luckly.work/">luckly</a></li>
        <li style="word-break:break-all"><strong>原文链接：</strong><a href="https://luckly.work/post/Flutter/flutter%E4%B8%8E%E5%8E%9F%E7%94%9F%E9%80%9A%E8%AE%AF/">https://luckly.work/post/Flutter/flutter%E4%B8%8E%E5%8E%9F%E7%94%9F%E9%80%9A%E8%AE%AF/</a></li>
        <li><strong>版权声明：</strong>本作品采用<a rel="license" href="https://creativecommons.org/licenses/by-nc-nd/4.0/">知识共享署名-非商业性使用-禁止演绎 4.0 国际许可协议</a>进行许可，非商业转载请注明出处（作者，原文链接），商业转载请联系作者获得授权。</li>
    </ul>
</div>
<br/>



        

<div class="post-archive">
    <h2>See Also</h2>
    <ul class="listing">
        
        <li><a href="/post/Flutter/flutter%E6%8F%92%E4%BB%B6flutter_staggered_grid_view/">Flutter插件flutter_staggered_grid_view</a></li>
        
        <li><a href="/post/Flutter/flutter2%E6%BA%90%E7%A0%81%E9%98%85%E8%AF%BB/">Flutter2源码阅读</a></li>
        
        <li><a href="/post/flutter_tips/%E8%BD%BB%E6%9D%BE%E4%BD%BF%E7%94%A8flutter1/">Dart &amp; Flutter 开发技巧 1-7</a></li>
        
        <li><a href="/post/flutter_tips/%E8%BD%BB%E6%9D%BE%E4%BD%BF%E7%94%A8flutter3/">Dart &amp; Flutter 开发技巧 15-21</a></li>
        
        <li><a href="/post/flutter_tips/%E8%BD%BB%E6%9D%BE%E4%BD%BF%E7%94%A8flutter4/">Dart &amp; Flutter 开发技巧 22-28</a></li>
        
    </ul>
</div>


        <div class="post-meta meta-tags">
            
            <ul class="clearfix">
                
                <li><a href='/tags/Flutter'>Flutter</a></li>
                
            </ul>
            
        </div>
    </article>
    
    

    
    
    <div class="post bg-white">
      <script src="https://utteranc.es/client.js"
            repo= "https://github.com/ITmxs/repo"
            issue-term="pathname"
            theme="github-light"
            crossorigin="anonymous"
            async>
      </script>
    </div>
    
</div>

                    <footer id="footer">
    <div>
        &copy; 2021 <a href="https://luckly.work/">早起的年轻人 By luckly</a>
        
        | <a rel="nofollow" target="_blank" href="http://beian.miit.gov.cn/">粤ICP备2021号-1</a>
        
    </div>
    <br />
    <div>
        <div class="github-badge">
            <a href="https://juejin.cn/user/3843548384077192" target="_black" rel="nofollow"><span class="badge-subject">Powered by</span><span class="badge-value bg-blue">掘金</span></a>
        </div>
        <div class="github-badge">
            <a href="https://space.bilibili.com/480883651" target="_black"><span class="badge-subject">Design by</span><span class="badge-value bg-brightgreen">早起的年轻人</span></a>
        </div>
        <div class="github-badge">
            <a href="https://cloud.tencent.com/developer/user/6702670" target="_black"><span class="badge-subject">Theme</span><span class="badge-value bg-yellowgreen">云社区</span></a>
        </div>
    </div>
</footer>


    
    <script type="text/javascript">
        window.MathJax = {
            tex2jax: {
                inlineMath: [['$', '$']],
                processEscapes: true
                }
            };
    </script>
    <script src='https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/MathJax.js?config=TeX-MML-AM_CHTML' async></script><script src="https://cdn.bootcdn.net/ajax/libs/fancybox/3.5.7/jquery.fancybox.min.js"></script>

<a id="rocket" href="#top"></a>
<script type="text/javascript" src='/js/totop.js?v=0.0.0' async=""></script>



    <script type="text/javascript" src="//busuanzi.ibruce.info/busuanzi/2.3/busuanzi.pure.mini.js" async></script>




    <script src='/js/douban.js'></script>
    <script src="/js/copy-to-clipboard.js"></script>

                </div>

                <div id="secondary">
    <section class="widget">
        <form id="search" action='https://luckly.work/search/' method="get" accept-charset="utf-8" target="_blank" _lpchecked="1">
      
      <input type="text" name="q" maxlength="20" placeholder="Search">
      <input type="hidden" name="sitesearch" value="https://luckly.work/">
      <button type="submit" class="submit icon-search"></button>
</form>
    </section>
    
    <section class="widget">
        <h3 class="widget-title">最近文章</h3>
<ul class="widget-list">
    
    <li>
        <a href="https://luckly.work/post/nginx/nginx%E6%96%87%E4%BB%B6%E5%86%85%E5%AE%B9/" title="Nginx文件内容">Nginx文件内容</a>
    </li>
    
    <li>
        <a href="https://luckly.work/post/nginx/nginx%E6%9E%81%E7%AE%80%E6%95%99%E7%A8%8B/" title="Nginx极简教程">Nginx极简教程</a>
    </li>
    
    <li>
        <a href="https://luckly.work/post/nginx/%E5%8D%81%E5%88%86%E9%92%9F%E5%85%A5%E9%97%A8nginx/" title="十分钟入门Nginx">十分钟入门Nginx</a>
    </li>
    
    <li>
        <a href="https://luckly.work/post/go/Goland%E8%BF%9C%E7%A8%8B%E5%BC%80%E5%8F%91%E9%85%8D%E7%BD%AE/" title="Goland远程开发配置">Goland远程开发配置</a>
    </li>
    
    <li>
        <a href="https://luckly.work/post/%E8%AF%BB%E4%B9%A6/%E5%9F%9F%E5%90%8D%E8%A7%A3%E6%9E%90/" title="域名解析">域名解析</a>
    </li>
    
    <li>
        <a href="https://luckly.work/post/git/%E6%8F%90%E4%BA%A4%E8%BF%87%E7%A8%8B%E7%9C%81%E7%95%A5%E6%9F%90%E4%BA%9B%E6%96%87%E4%BB%B6/" title="提交过程省略某些文件">提交过程省略某些文件</a>
    </li>
    
    <li>
        <a href="https://luckly.work/post/flutter_tips/Flutter_DropdownButton%E7%A4%BA%E4%BE%8B/" title="Flutter_DropdownButton示例">Flutter_DropdownButton示例</a>
    </li>
    
    <li>
        <a href="https://luckly.work/post/flutter_tips/Flutter_ExpansionPanelList%E5%92%8CExpansionPanelList.radio%E7%A4%BA%E4%BE%8B/" title="Flutter_ExpansionPanelList和ExpansionPanelList">Flutter_ExpansionPanelList和ExpansionPanelList</a>
    </li>
    
    <li>
        <a href="https://luckly.work/post/flutter_tips/Flutter%E5%BE%AE%E4%BF%A1%E5%88%86%E4%BA%AB%E9%93%BE%E6%8E%A5%E8%B7%B3%E5%9B%9EApp%E6%8C%87%E5%AE%9A%E9%A1%B5%E9%9D%A2/" title="Flutter微信分享链接跳回App指定页面">Flutter微信分享链接跳回App指定页面</a>
    </li>
    
    <li>
        <a href="https://luckly.work/post/%E4%BF%A1%E6%81%AF%E7%B3%BB%E7%BB%9F/%E5%A4%96%E5%8C%85%E5%8F%AF%E8%83%BD%E7%9A%84%E9%97%AE%E9%A2%98/" title="外包可能的问题">外包可能的问题</a>
    </li>
    
</ul>
    </section>

    

    <section class="widget">
        <h3 class="widget-title"><a href='/categories/'>分类</a></h3>
<ul class="widget-list">
    
    <li><a href="https://luckly.work/categories/Flutter/">Flutter (326)</a></li>
    
    <li><a href="https://luckly.work/categories/IT/">IT (2)</a></li>
    
    <li><a href="https://luckly.work/categories/Kotlin/">Kotlin (2)</a></li>
    
    <li><a href="https://luckly.work/categories/Mysql/">Mysql (1)</a></li>
    
    <li><a href="https://luckly.work/categories/nginx/">nginx (1)</a></li>
    
    <li><a href="https://luckly.work/categories/Vue/">Vue (6)</a></li>
    
    <li><a href="https://luckly.work/categories/YouTube%E8%A7%86%E9%A2%91%E4%B8%8B%E8%BD%BD/">YouTube视频下载 (1)</a></li>
    
    <li><a href="https://luckly.work/categories/android/">android (6)</a></li>
    
    <li><a href="https://luckly.work/categories/dart/">dart (96)</a></li>
    
    <li><a href="https://luckly.work/categories/Flutter/">Flutter (28)</a></li>
    
    <li><a href="https://luckly.work/categories/gin/">gin (25)</a></li>
    
    <li><a href="https://luckly.work/categories/git/">git (4)</a></li>
    
    <li><a href="https://luckly.work/categories/Go/">Go (102)</a></li>
    
    <li><a href="https://luckly.work/categories/gorm/">gorm (4)</a></li>
    
    <li><a href="https://luckly.work/categories/grpc/">grpc (1)</a></li>
    
    <li><a href="https://luckly.work/categories/html/">html (3)</a></li>
    
    <li><a href="https://luckly.work/categories/ios/">ios (1)</a></li>
    
    <li><a href="https://luckly.work/categories/linux/">linux (1)</a></li>
    
    <li><a href="https://luckly.work/categories/nginx/">nginx (6)</a></li>
    
    <li><a href="https://luckly.work/categories/python/">python (35)</a></li>
    
    <li><a href="https://luckly.work/categories/read/">读书笔记 (6)</a></li>
    
    <li><a href="https://luckly.work/categories/redis/">redis (2)</a></li>
    
    <li><a href="https://luckly.work/categories/%E4%B8%AA%E4%BA%BA%E8%B5%84%E6%96%99/">个人资料 (1)</a></li>
    
    <li><a href="https://luckly.work/categories/%E4%B9%A6%E5%8D%95/">书单 (8)</a></li>
    
    <li><a href="https://luckly.work/categories/%E4%B9%A6%E8%AF%84/">书评 (1)</a></li>
    
    <li><a href="https://luckly.work/categories/%E4%BF%A1%E6%81%AF%E7%B3%BB%E7%BB%9F%E7%AE%A1%E7%90%86%E5%B8%88/">信息系统管理师 (19)</a></li>
    
    <li><a href="https://luckly.work/categories/%E4%BF%A1%E6%81%AF%E7%B3%BB%E7%BB%9F%E9%A1%B9%E7%9B%AE%E7%AE%A1%E7%90%86%E5%B8%88/">信息系统项目管理师 (25)</a></li>
    
    <li><a href="https://luckly.work/categories/%E5%8E%9F%E5%88%99/">原则 (1)</a></li>
    
    <li><a href="https://luckly.work/categories/%E5%8E%9F%E7%94%9F%E9%80%9A%E8%AE%AF/">原生通讯 (1)</a></li>
    
    <li><a href="https://luckly.work/categories/%E5%9F%BA%E7%A1%80/">基础 (1)</a></li>
    
    <li><a href="https://luckly.work/categories/%E5%A4%8D%E5%88%A9%E6%95%88%E5%BA%94/">复利效应 (1)</a></li>
    
    <li><a href="https://luckly.work/categories/%E5%AE%89%E8%A3%85%E6%95%99%E7%A8%8B/">安装教程 (1)</a></li>
    
    <li><a href="https://luckly.work/categories/%E5%B0%91%E6%9C%89%E4%BA%BA%E8%B5%B0%E7%9A%84%E8%B7%AF/">少有人走的路 (1)</a></li>
    
    <li><a href="https://luckly.work/categories/%E5%BF%83%E8%AF%AD/">心语 (3)</a></li>
    
    <li><a href="https://luckly.work/categories/%E6%8F%92%E4%BB%B6/">插件 (2)</a></li>
    
    <li><a href="https://luckly.work/categories/%E6%95%99%E5%AD%A6/">教学 (1)</a></li>
    
    <li><a href="https://luckly.work/categories/%E7%8E%8B%E9%98%B3%E6%98%8E/">王阳明 (3)</a></li>
    
    <li><a href="https://luckly.work/categories/%E7%94%B5%E5%AD%90%E4%B9%A6/">电子书 (1)</a></li>
    
    <li><a href="https://luckly.work/categories/%E7%99%BB%E9%99%86%E8%A1%A8%E5%8D%95/">登陆表单 (1)</a></li>
    
    <li><a href="https://luckly.work/categories/%E7%A8%BB%E7%9B%9B%E5%92%8C%E5%A4%AB/">稻盛和夫 (1)</a></li>
    
    <li><a href="https://luckly.work/categories/%E7%A9%B7%E7%88%B8%E7%88%B8%E5%AF%8C%E7%88%B8%E7%88%B8/">穷爸爸富爸爸 (1)</a></li>
    
    <li><a href="https://luckly.work/categories/%E7%B2%BE%E8%BF%9B/">精进 (3)</a></li>
    
    <li><a href="https://luckly.work/categories/%E7%BC%96%E7%A8%8B/">编程 (1)</a></li>
    
    <li><a href="https://luckly.work/categories/%E8%99%9A%E5%B9%BB/">虚幻 (1)</a></li>
    
    <li><a href="https://luckly.work/categories/%E8%B4%A2%E5%8A%A1%E8%87%AA%E7%94%B1%E4%B9%8B%E8%B7%AF/">财务自由之路 (2)</a></li>
    
    <li><a href="https://luckly.work/categories/%E8%B7%91%E6%AD%A5/">跑步 (1)</a></li>
    
    <li><a href="https://luckly.work/categories/%E8%B7%AF%E7%94%B1%E4%BC%A0%E5%8F%82/">路由传参 (1)</a></li>
    
    <li><a href="https://luckly.work/categories/%E8%B7%AF%E7%BA%BF/">路线 (1)</a></li>
    
    <li><a href="https://luckly.work/categories/%E8%BD%AF%E4%BB%B6%E5%AE%9E%E6%96%BD/">软件实施 (1)</a></li>
    
    <li><a href="https://luckly.work/categories/%E9%98%B3%E6%98%8E%E5%BF%83%E5%AD%A6/">阳明心学 (3)</a></li>
    
    <li><a href="https://luckly.work/categories/%E9%A1%B9%E7%9B%AE/">项目 (1)</a></li>
    
    <li><a href="https://luckly.work/categories/%E9%AD%85%E5%8A%9B/">魅力 (1)</a></li>
    
</ul>
    </section>

    <section class="widget">
        <h3 class="widget-title"><a href='/tags/'>标签</a></h3>
<div class="tagcloud">
    
    <a href="https://luckly.work/tags/flutter/">flutter</a>
    
    <a href="https://luckly.work/tags/IT/">IT</a>
    
    <a href="https://luckly.work/tags/Kotlin/">Kotlin</a>
    
    <a href="https://luckly.work/tags/Mysql/">Mysql</a>
    
    <a href="https://luckly.work/tags/nginx/">nginx</a>
    
    <a href="https://luckly.work/tags/Vue/">Vue</a>
    
    <a href="https://luckly.work/tags/YouTube%E8%A7%86%E9%A2%91%E4%B8%8B%E8%BD%BD/">YouTube视频下载</a>
    
    <a href="https://luckly.work/tags/android/">android</a>
    
    <a href="https://luckly.work/tags/dart/">dart</a>
    
    <a href="https://luckly.work/tags/flutter/">flutter</a>
    
    <a href="https://luckly.work/tags/gin/">gin</a>
    
    <a href="https://luckly.work/tags/git/">git</a>
    
    <a href="https://luckly.work/tags/go/">go</a>
    
    <a href="https://luckly.work/tags/gorm/">gorm</a>
    
    <a href="https://luckly.work/tags/grpc/">grpc</a>
    
    <a href="https://luckly.work/tags/html/">html</a>
    
    <a href="https://luckly.work/tags/ios/">ios</a>
    
    <a href="https://luckly.work/tags/linux/">linux</a>
    
    <a href="https://luckly.work/tags/nginx/">nginx</a>
    
    <a href="https://luckly.work/tags/python/">python</a>
    
    <a href="https://luckly.work/tags/redis/">redis</a>
    
    <a href="https://luckly.work/tags/%E4%B8%AA%E4%BA%BA%E8%B5%84%E6%96%99/">个人资料</a>
    
    <a href="https://luckly.work/tags/%E4%B9%A6%E5%8D%95/">书单</a>
    
    <a href="https://luckly.work/tags/%E4%B9%A6%E8%AF%84/">书评</a>
    
    <a href="https://luckly.work/tags/%E4%BF%A1%E6%81%AF%E7%B3%BB%E7%BB%9F%E7%AE%A1%E7%90%86%E5%B8%88/">信息系统管理师</a>
    
    <a href="https://luckly.work/tags/%E4%BF%A1%E6%81%AF%E7%B3%BB%E7%BB%9F%E9%A1%B9%E7%9B%AE%E7%AE%A1%E7%90%86%E5%B8%88/">信息系统项目管理师</a>
    
    <a href="https://luckly.work/tags/%E5%85%A5%E9%97%A8/">入门</a>
    
    <a href="https://luckly.work/tags/%E5%8E%9F%E5%88%99/">原则</a>
    
    <a href="https://luckly.work/tags/%E5%8E%9F%E7%94%9F%E9%80%9A%E8%AE%AF/">原生通讯</a>
    
    <a href="https://luckly.work/tags/%E5%9F%BA%E7%A1%80/">基础</a>
    
    <a href="https://luckly.work/tags/%E5%A4%8D%E5%88%A9%E6%95%88%E5%BA%94/">复利效应</a>
    
    <a href="https://luckly.work/tags/%E5%AE%89%E8%A3%85%E6%95%99%E7%A8%8B/">安装教程</a>
    
    <a href="https://luckly.work/tags/%E5%B0%91%E6%9C%89%E4%BA%BA%E8%B5%B0%E7%9A%84%E8%B7%AF/">少有人走的路</a>
    
    <a href="https://luckly.work/tags/%E5%BF%83%E8%AF%AD/">心语</a>
    
    <a href="https://luckly.work/tags/%E6%8F%92%E4%BB%B6/">插件</a>
    
    <a href="https://luckly.work/tags/%E6%95%99%E5%AD%A6/">教学</a>
    
    <a href="https://luckly.work/tags/%E7%8E%8B%E9%98%B3%E6%98%8E/">王阳明</a>
    
    <a href="https://luckly.work/tags/%E7%94%B5%E5%AD%90%E4%B9%A6/">电子书</a>
    
    <a href="https://luckly.work/tags/%E7%99%BB%E9%99%86%E8%A1%A8%E5%8D%95/">登陆表单</a>
    
    <a href="https://luckly.work/tags/%E7%A8%BB%E7%9B%9B%E5%92%8C%E5%A4%AB/">稻盛和夫</a>
    
    <a href="https://luckly.work/tags/%E7%A9%B7%E7%88%B8%E7%88%B8%E5%AF%8C%E7%88%B8%E7%88%B8/">穷爸爸富爸爸</a>
    
    <a href="https://luckly.work/tags/%E7%B2%BE%E8%BF%9B/">精进</a>
    
    <a href="https://luckly.work/tags/%E7%BC%96%E7%A8%8B/">编程</a>
    
    <a href="https://luckly.work/tags/%E8%99%9A%E5%B9%BB/">虚幻</a>
    
    <a href="https://luckly.work/tags/%E8%AF%97/">诗</a>
    
    <a href="https://luckly.work/tags/%E8%AF%BB%E4%B9%A6%E7%AC%94%E8%AE%B0/">读书笔记</a>
    
    <a href="https://luckly.work/tags/%E8%B4%A2%E5%8A%A1%E8%87%AA%E7%94%B1%E4%B9%8B%E8%B7%AF/">财务自由之路</a>
    
    <a href="https://luckly.work/tags/%E8%B7%91%E6%AD%A5/">跑步</a>
    
    <a href="https://luckly.work/tags/%E8%B7%AF%E7%94%B1%E4%BC%A0%E5%8F%82/">路由传参</a>
    
    <a href="https://luckly.work/tags/%E8%B7%AF%E7%BA%BF/">路线</a>
    
    <a href="https://luckly.work/tags/%E8%BD%AF%E4%BB%B6%E5%AE%9E%E6%96%BD/">软件实施</a>
    
    <a href="https://luckly.work/tags/%E9%80%9A%E8%AE%AF%E5%BD%95/">通讯录</a>
    
    <a href="https://luckly.work/tags/%E9%98%B3%E6%98%8E%E5%BF%83%E5%AD%A6/">阳明心学</a>
    
    <a href="https://luckly.work/tags/%E9%A1%B9%E7%9B%AE/">项目</a>
    
    <a href="https://luckly.work/tags/%E9%AD%85%E5%8A%9B/">魅力</a>
    
</div>
    </section>

    
<section class="widget">
    <h3 class="widget-title">友情链接</h3>
    <ul class="widget-list">
        
        <li>
            <a target="_blank" href="http://www.topgoer.com/" title="枯藤">枯藤</a>
        </li>
        
        <li>
            <a target="_blank" href="https://gorm.cn/zh_CN/docs/index.html" title="gorm">gorm</a>
        </li>
        
        <li>
            <a target="_blank" href="https://docs.python.org/zh-cn/3/tutorial/index.html" title="python">python</a>
        </li>
        
        <li>
            <a target="_blank" href="https://www.liwenzhou.com/" title="李文周">李文周的博客</a>
        </li>
        
        <li>
            <a target="_blank" href="http://www.xbzweb.com/" title="小包子的博客">小包子的博客</a>
        </li>
        
        <li>
            <a target="_blank" href="https://www.flysnow.org/" title="飞雪无情的博客">飞雪无情的博客</a>
        </li>
        
        <li>
            <a target="_blank" href="https://sliverhorn.com/" title="sliverhorn的博客">sliverhorn的博客</a>
        </li>
        
        <li>
            <a target="_blank" href="http://yuedu.baidu.com/ebook/14a722970740be1e640e9a3e" title="Android Gradle权威指南">Android Gradle权威指南</a>
        </li>
        
        <li>
            <a target="_blank" href="https://gesdh.cn/" title="小格子">格子导航</a>
        </li>
        
        <li>
            <a target="_blank" href="https://itachi.xyz/" title="阿林">itachi&#39;s Blog</a>
        </li>
        
        <li>
            <a target="_blank" href="https://darjun.github.io/" title="大俊">大俊Blog</a>
        </li>
        
        <li>
            <a target="_blank" href="https://geektutu.com/post/quick-golang.html" title="极客兔兔">极客兔兔Blog</a>
        </li>
        
        <li>
            <a target="_blank" href="http://zxfcumtcs.github.io/" title="赵雪峰">雪峰Blog</a>
        </li>
        
    </ul>
</section>


    <section class="widget">
        <h3 class="widget-title">其它</h3>
        <ul class="widget-list">
            <li><a href="https://luckly.work/index.xml">文章 RSS</a></li>
        </ul>
    </section>
</div>
            </div>
        </div>
    </div>
</body>

</html>